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Finding the Fourth Proportional to 328,480.20, 492,720.30 and 249,748.20

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Solution

The fourth proportional to 328,480.20, 492,720.30 and 249,748.20 is: 374,622.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,480.20 : 492,720.30 = 249,748.20 : x
  2. Step 2: Convert to fraction form
    328,480.20/492,720.30 = 249,748.20/x
  3. Step 3: Cross multiply
    328,480.20x = 492,720.30 × 249,748.20
  4. Step 4: Simplify right side
    328,480.20x = 123,056,008,028.46
  5. Step 5: Solve for x
    x = 123,056,008,028.46/328,480.20
  6. Step 6: Final answer
    x = 374,622.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.